243 lines
9.8 KiB
Python
243 lines
9.8 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from sqlalchemy.orm import exc
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from quantum.common import exceptions as q_exc
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import quantum.db.api as db
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from quantum.db import models_v2
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from quantum.db import securitygroups_db as sg_db
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from quantum import manager
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from quantum.openstack.common import log as logging
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from quantum.plugins.linuxbridge.common import config # noqa
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from quantum.plugins.linuxbridge.common import constants
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from quantum.plugins.linuxbridge.db import l2network_models_v2
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LOG = logging.getLogger(__name__)
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def initialize():
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db.configure_db()
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def sync_network_states(network_vlan_ranges):
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"""Synchronize network_states table with current configured VLAN ranges."""
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session = db.get_session()
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with session.begin():
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# get existing allocations for all physical networks
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allocations = dict()
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states = (session.query(l2network_models_v2.NetworkState).
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all())
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for state in states:
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if state.physical_network not in allocations:
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allocations[state.physical_network] = set()
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allocations[state.physical_network].add(state)
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# process vlan ranges for each configured physical network
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for physical_network, vlan_ranges in network_vlan_ranges.iteritems():
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# determine current configured allocatable vlans for this
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# physical network
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vlan_ids = set()
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for vlan_range in vlan_ranges:
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vlan_ids |= set(xrange(vlan_range[0], vlan_range[1] + 1))
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# remove from table unallocated vlans not currently allocatable
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if physical_network in allocations:
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for state in allocations[physical_network]:
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try:
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# see if vlan is allocatable
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vlan_ids.remove(state.vlan_id)
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except KeyError:
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# it's not allocatable, so check if its allocated
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if not state.allocated:
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# it's not, so remove it from table
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LOG.debug(_("Removing vlan %(vlan_id)s on "
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"physical network %(physical_network)s"
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" from pool"),
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{'vlan_id': state.vlan_id,
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'physical_network': physical_network})
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session.delete(state)
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del allocations[physical_network]
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# add missing allocatable vlans to table
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for vlan_id in sorted(vlan_ids):
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state = l2network_models_v2.NetworkState(physical_network,
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vlan_id)
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session.add(state)
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# remove from table unallocated vlans for any unconfigured physical
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# networks
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for states in allocations.itervalues():
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for state in states:
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if not state.allocated:
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LOG.debug(_("Removing vlan %(vlan_id)s on physical "
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"network %(physical_network)s"
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" from pool"),
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{'vlan_id': state.vlan_id,
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'physical_network': physical_network})
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session.delete(state)
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def get_network_state(physical_network, vlan_id):
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"""Get state of specified network."""
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session = db.get_session()
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try:
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state = (session.query(l2network_models_v2.NetworkState).
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filter_by(physical_network=physical_network,
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vlan_id=vlan_id).
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one())
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return state
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except exc.NoResultFound:
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return None
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def reserve_network(session):
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with session.begin(subtransactions=True):
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state = (session.query(l2network_models_v2.NetworkState).
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filter_by(allocated=False).
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with_lockmode('update').
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first())
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if not state:
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raise q_exc.NoNetworkAvailable()
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LOG.debug(_("Reserving vlan %(vlan_id)s on physical network "
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"%(physical_network)s from pool"),
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{'vlan_id': state.vlan_id,
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'physical_network': state.physical_network})
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state.allocated = True
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return (state.physical_network, state.vlan_id)
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def reserve_specific_network(session, physical_network, vlan_id):
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with session.begin(subtransactions=True):
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try:
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state = (session.query(l2network_models_v2.NetworkState).
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filter_by(physical_network=physical_network,
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vlan_id=vlan_id).
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with_lockmode('update').
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one())
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if state.allocated:
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if vlan_id == constants.FLAT_VLAN_ID:
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raise q_exc.FlatNetworkInUse(
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physical_network=physical_network)
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else:
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raise q_exc.VlanIdInUse(vlan_id=vlan_id,
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physical_network=physical_network)
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LOG.debug(_("Reserving specific vlan %(vlan_id)s on physical "
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"network %(physical_network)s from pool"),
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{'vlan_id': vlan_id,
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'physical_network': physical_network})
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state.allocated = True
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except exc.NoResultFound:
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LOG.debug(_("Reserving specific vlan %(vlan_id)s on physical "
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"network %(physical_network)s outside pool"),
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{'vlan_id': vlan_id,
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'physical_network': physical_network})
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state = l2network_models_v2.NetworkState(physical_network, vlan_id)
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state.allocated = True
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session.add(state)
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def release_network(session, physical_network, vlan_id, network_vlan_ranges):
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with session.begin(subtransactions=True):
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try:
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state = (session.query(l2network_models_v2.NetworkState).
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filter_by(physical_network=physical_network,
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vlan_id=vlan_id).
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with_lockmode('update').
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one())
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state.allocated = False
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inside = False
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for vlan_range in network_vlan_ranges.get(physical_network, []):
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if vlan_id >= vlan_range[0] and vlan_id <= vlan_range[1]:
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inside = True
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break
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if inside:
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LOG.debug(_("Releasing vlan %(vlan_id)s on physical network "
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"%(physical_network)s to pool"),
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{'vlan_id': vlan_id,
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'physical_network': physical_network})
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else:
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LOG.debug(_("Releasing vlan %(vlan_id)s on physical network "
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"%(physical_network)s outside pool"),
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{'vlan_id': vlan_id,
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'physical_network': physical_network})
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session.delete(state)
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except exc.NoResultFound:
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LOG.warning(_("vlan_id %(vlan_id)s on physical network "
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"%(physical_network)s not found"),
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{'vlan_id': vlan_id,
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'physical_network': physical_network})
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def add_network_binding(session, network_id, physical_network, vlan_id):
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with session.begin(subtransactions=True):
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binding = l2network_models_v2.NetworkBinding(network_id,
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physical_network, vlan_id)
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session.add(binding)
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def get_network_binding(session, network_id):
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try:
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binding = (session.query(l2network_models_v2.NetworkBinding).
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filter_by(network_id=network_id).
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one())
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return binding
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except exc.NoResultFound:
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return
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def get_port_from_device(device):
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"""Get port from database."""
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LOG.debug(_("get_port_from_device() called"))
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session = db.get_session()
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sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
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query = session.query(models_v2.Port,
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sg_db.SecurityGroupPortBinding.security_group_id)
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query = query.outerjoin(sg_db.SecurityGroupPortBinding,
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models_v2.Port.id == sg_binding_port)
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query = query.filter(models_v2.Port.id.startswith(device))
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port_and_sgs = query.all()
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if not port_and_sgs:
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return
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port = port_and_sgs[0][0]
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plugin = manager.QuantumManager.get_plugin()
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port_dict = plugin._make_port_dict(port)
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port_dict['security_groups'] = []
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for port_in_db, sg_id in port_and_sgs:
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if sg_id:
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port_dict['security_groups'].append(sg_id)
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port_dict['security_group_rules'] = []
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port_dict['security_group_source_groups'] = []
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port_dict['fixed_ips'] = [ip['ip_address']
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for ip in port['fixed_ips']]
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return port_dict
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def set_port_status(port_id, status):
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"""Set the port status."""
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LOG.debug(_("set_port_status as %s called"), status)
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session = db.get_session()
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try:
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port = session.query(models_v2.Port).filter_by(id=port_id).one()
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port['status'] = status
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session.merge(port)
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session.flush()
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except exc.NoResultFound:
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raise q_exc.PortNotFound(port_id=port_id)
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